I laminated a checklist to help me remember everything. It is pretty easy to leave a drive down in all the excitement of a busy or rushed departure.
https://forums.iboats.com/threads/boat-check-list.745876/
I don't really understand why MBS doesn't drill the hole. I have the MBS alignment tool but don't have the tools to drilled the hole. It was cheaper for me to buy a tool that didn't require drilling.
I asked if you see water exiting the boat to determine if a flapper is blocking the water. A water blockage may back up the water in the exhaust. I would also think the water lessens how much noise the flappers make.
Did you replace both flappers? I still wonder if all the pieces were removed.
The seal/bushings can wait if finances get tight. That doesn't seem to be where the water came in from. Clearly the bellows were past due. The gimbal seal only needs to be installed if you are getting a greasable bearing. Perma-lube bearings don't need them.
Went with OEM. Bought a puller. I assume it has to be clocked to align where the grease hole would be with the hole in the drive.
Any one put a little grease on the outside of the bearing or put it in the freezer for easier install?
I torque slow. I felt it give a bit before I hit the number but it hadn't sheared off so I was able to back it out. I thought the first one had a defect but when the second broke I knew torque was too high.
That brass fitting should never be able to damage those threads.
That pan is likely cast iron and the fitting is brass. Tighten the fitting too much and it will break. I went through 2 fittings because the torque in the manual was wrong. Probably just replace the gasket and tighten hand tight.
The 4.3's have a 90 amp fuse on the starter. I once shorted that out and nothing worked. Not sure if your boat has that fuse. But it does sound like a fuse is blown.
Going to replace the gimbal bearing while the outdrive is off (SN below in signature). It feels smooth but I can hear it spinning when rotating the alignment tool. It may be on the way out.
I have the perma lube bearing currently installed and want to use a similar part. I can go with the merc...